.container {
    width: 100%;
    height: calc(100% - 50px);
    display: flex;
    align-items: center;
    justify-content: center;
 }

 body{
    background: url(../images/game_room1.png);
    background-repeat: no-repeat;
    background-position:center center;
    background-size: cover;
  }

 #screen{
     width: 450px;
     height: 50px;
     margin-top: 10px;
     font-size: 25px;
     line-height: 50px;
     text-align: center;
     background:rgb(46,160,67);
     color:white;
     border-radius: 20px;
 }

 #screen:hover{
    transition: all 1s;
    background-color: rgba(255,255,255,0.7);
    color:black;
}

.buttons button{
    line-height: 50px;
    position:fixed;
    top:250px;
    right:210px;
    width: 150px;
    height: 150px;
    border: none;
    border-radius: 50%;
    background: url(../images/game_hall3.jpg);
    background-size: cover;
    color: white;
    font-size: 22px;
    cursor: pointer;
    /* width: 450px;
    height: 50px;
    margin-top: 10px;
    font-size: 25px;
    line-height: 50px;
    text-align: center;
    background:rgb(46,160,67);
    color:white;
    border-radius: 20px;
    border: none; */
}